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ACS Catal: Adsorption Preference Determines Segregation Direction: A Shortcut to More Realistic Surface Models of Alloy Catalysts

A correct description of active sites is the precondition towards reaction mechanism study and catalyst screening. In many cases, high-symmetry and ideally ordered crystalline surfaces are used to represent the reactive sites. However, reaction-induced surface segregation and restructuring weaken the rationality of simply employing the suggested most stable surfaces. This paper describes an est...

Angew Chem: Activation and Spillover of Hydrogen on Sub‐1 nm Pd Nano‐clusters Confined within Sodalite Zeolite for Semi‐hydrogenation of Alkynes

The search for efficient nontoxic catalysts able to perform industrial hydrogenations is a topic of interest, transversal to many catalytic processes. This communication describes a mechanistic phenomenon of activation and spillover of hydrogen for remarkable selectivity of semi‐hydrogenation of acetylene over sub‐1 nm Pd nanoclusters confined within sodalite (SOD) zeolite (Pd@SOD). Specifica...

JACS: Ultrathin PdAu Shells with Controllable Alloying Degree on Pd Nanocubes towards ECRR

​Electrocatalytic reduction of carbon dioxide (CO2ER) to reusable carbon resources is a significant step to balance the carbon cycle. This Communication describes a seed-mediated growth method to synthesize ultrathin Pd–Au alloy nanoshells with controllable alloying degree on Pd nanocubes. Specifically, Pd@Pd3Au7 nanocrystals (NCs) show superior CO2ER performance, with a 94% CO faraday effici...

Chem Sci: Achieving efficient and robust catalytic reforming on dual-sites of Cu species

​Catalytic reforming provides a practical technique for on-board hydrogen production in fuel cell applications. The high energy density, easy transportation and non-toxicity of biomass-derived dimethyl ether (bio-DME) offer potential to replace methanol for on-board steam reforming (SR). Presently, the reaction mechanism over conventional Cu-based SR catalysts remains elusive, limiting the rat...

JACS: The Crucial Role of Surface Hydroxyls on the Activity and Stability in ECRR

The role of surface hydroxyls is significant for understanding catalytic performance of metallic oxides for CO2 electroreduction reaction (CO2ER). This Communication describes, employing SnOx as a model system, how to moderate coverage of hydroxyl to derive a stable Sn branches catalyst for CO2ER with a 93.1% Faradaic efficiency (FE) of carbonaceous products. With use of in situ attenuated tota...

Wanyu’s work is selected for an Editor’s Choice collection

On the theme of inorganic materials, Editors of Chemical Science highlighted 10 outstanding contributions published on this topic. Wanyu’s work on “Achieving Convenient Tandem of CO2Electroreduction and Photovoltage Using Potential-Independent Disordered Ag Nanoparticles.” has been selected for this collection. Congrats!

Angew Chem: Adjustable Reduction Potential of Electrons via Quantum Confinement for Selective CO2 Photoreduction to Methanol

CH3OH production from photocatalytic CO2 reduction reaction (PCRR) represents a promising route for the clean utilization of renewable resources, but serious charge recombination, unsatisfied stability and poor selectivity limit its practical application. This paper describes the design and fabrication of 0D/2D materials with polymeric C3N4 nanosheets and CdSe quantum dots (QDs) to enhance the ...

Energy Environ. Sci.:Photoelectrochemical CO2 Reduction to Adjustable Syngas on Grain-boundary-mediated a-Si/TiO2/Au Photocathodes with Low Onset Potentials

Photoelectrochemical (PEC) CO2 reduction reaction (CRR) in aqueous medium is among the most promising methods to produce renewable fuel with solar and water as the energy and electron source. But the high negative bias remains a prerequisite to achieve an appreciable conversion at present due to the large overpotential of CO2 reduction. This communication describes PEC CRR with low onset potent...

Angew Chem: Tuning Cu/Cu2O Interfaces for Reduction of Carbon Dioxide to Methanol in Aqueous Solutions

Artificial photosynthesis can store solar energy and reduce CO2 into fuels to potentially alleviate global warming and energy crisis. Compared to gas products, it remains a grand challenge to tune the product distribution of artificial photosynthesis to liquid fuels, such as CH3OH, that are suitable for storage and transport. This paper describes the introduction of metallic Cu nanoparticles (N...

Nat Commun: Breaking the Scaling Relationship via Thermally Stable Pt/Cu Single Atom Alloys for Catalytic Dehydrogenation

Due to the existence of scaling properties of adsorption energies on transition metal surfaces, the enhancement of the catalytic activity is frequently accompanied by side reactions leading to a reduction in selectivity for the target product. Herein, by systematically screening Pt alloy materials using density functional theory calculations, we developed an approach to breaking the scaling rel...

Formation of Enriched Vacancies for Enhanced CO2 Electrocatalytic Reduction over AuCu Alloys

Electro-reduction of carbon dioxide (CO2) is a promising way to curb the excessive CO2 emission and produce value-added products. Gold-copper (AuCu) alloys are known to exhibit eminent CO production performance towards CO2ER. However, it still remains a grand challenge to balance *COOH and *CO bonding and to further descend CO onset potential. This paper describes the construction of Cu vacanci...

Nanostructured NiFe (Oxy)hydroxide with Easily Oxidized Ni Towards Efficient Oxygen Evolution Reaction

Water splits into hydrogen and oxygen electrochemically is one of the most promising strategies for the utilization and storage of solar energy. However, oxygen evolution reaction (OER) with sluggish kinetics hinders its larger-scale application. NiFe-based catalysts are one of the most efficient oxygen evolution catalysts (OECs). High-valence Ni is considered as active site or conductive frame...

Low-Coordinated Edge Sites on Ultrathin Palladium Nanosheets Boost CO2 Electroreduction Performance

Electrochemical conversion of carbon dioxide (CO2) to value-added products is a promising way to solve CO2 emission problems. Thanks to the eminent conductivity and proper adsorption to intermediates, palladium has become a promising candidate for CO2 electroreduction (CO2ER). However, Pd-based nanocatalysts generally need a large overpotential to overcome energy barriers in generating highly s...

Subsurface Catalysis-mediated Selectivity of Dehydrogenation Reaction

Progress in heterogeneous catalysis is often hampered by the difficulties of constructing active architecture and understanding reaction mechanism at molecular level due to the structural complexity of practical catalysts, in particular for multicomponent catalysts. Although surface science experiment and theoretical simulation help understand the detailed reaction mechanisms over model systems...

Highlighted by Chemistry World: Carbon dioxide recycling on the ball

Cocatalysts on the outside and inside of hollow spheres trigger photocatalytic carbon dioxide reduction to syngas‘Unlike previous ones, our cocatalyst structure is completely separated by a TiO2 shell, enabling electrons and holes generated by TiO2 to flow in opposite directions, which greatly supresses charge carrier recombination,’ Gong tells Chemistry World. Irradiation by solar light caus...

Tunable Syngas Production from Photocatalytic CO2 Reduction with Mitigated Charge Recombination Driven by Spatially Separated Cocatalysts

Photocatalytic CO2 reduction represents a sustainable route to generate syngas (the mixture of CO and H2 ), which is a key feedstock to produce liquid fuels in industry. Yet this reaction typically suffers from two limitations: unsuitable CO/H2 ratio and serious charge recombination. This paper describes the production of syngas from photocatalytic CO2 reduction with tunable CO/H2 ratio via adj...

Highly Efficient Photoelectrochemical H2O2 Production Reaction with Co3O4as Co-catalysts

The mixed-metal oxides are one of the most frequently used catalysts in chemical industry, because the superior catalytic reactivity can be achieved by taking advantage of the synergetic effects of their parent oxides. However, the interfacial electronic interactions between metal oxides remains unclear due to their structural complexity. This paper describes the modulation of catalytic perform...

The nature of loading-dependent reaction barrier over mixed RuO2/TiO2 catalysts

Mixed-metal oxides are one of the most frequently used catalysts in chemical industry, because the superior catalytic reactivity can be achieved by taking advantage of the synergetic effects of their parent oxides. However, the interfacial electronic interactions between metal oxides remain unclear, because of their structural complexity. This paper describes the modulation of catalytic perform...

Angew Chem: The Functionality of Surface Hydroxyls on CO2 Reduction over Cu2O in Aqueous Solutions

​CO2 reduction in aqueous solutions is an attractive strategy for carbon capture and utilization. Cuprous oxide (Cu2O) is a promising catalyst for CO2 reduction as it can not only convert CO2 into valuable hydrocarbons but also suppress the side H2 evolution reaction (HER). However, the nature of the active sites is still under debate due to the complex surface structure of Cu2O under reducing...

Energy Environ Sci: Efficient and Robust CIGS Photocathodes for Solar Water Splitting

Chalcopyrite thin film absorbers such as Cu(In,Ga)Se2 (CIGS) exhibit excellent solar energy conversion efficiency, particularly when coupled with CdS to form an excellent p-n junction. An increasing number of investigations have focused on adopting protective layers and cocatalysts for chalcopyrite/CdS to improve its stability and surface reaction kinetics. However, satisfactory performance has...

Chem Sci: Identification of Pt-based Catalysts for Propane Dehydrogenation via a Probability Analysis

The intrinsic errors due to functionals are always a concern on the reliability of the predicted catalytic performance by density functional theory. This paper describes a probability-based computational screening study, which has successfully identified an optimal bimetallic alloy (Pt3In) for propane dehydrogenation reaction (PDH). Considering DFT uncertainty, Pt3In was found to get an activit...

Angew Chem: Hydroxyl‐mediated Non‐oxidative Propane Dehydrogenation over VOx/Al2O3 Catalysts with Promoted Stability

Supported vanadium oxides are one of the most promising alternative catalysts for propane dehydrogenation (PDH) and massive efforts have been made to improve its catalytic performance. However, unlike Pt‐based catalysts, the nature of the active site and surface structure of supported vanadium catalysts under reductive reaction condition still remain elusive. We show that the surface structure...

JPCC: Coverage Effect on the Activity of the Acetylene Semihydrogenation over Pd–Sn Catalysts: A Density Functional Theory Study

​The existence of acetylene impurities in ethylene feedstock is harmful to downstream polymerization reactions. The removal of acetylene can be achieved via semihydrogenation reaction, which is normally catalyzed by Pd-based catalysts. This paper describes the coverage effect on the activity of acetylene hydrogenation reactions over Pd and PdSn alloy surfaces. High-coverage models are presente...

Chem Sci: On the role of Ce in CO2 adsorption and activation over lanthanum species

La2O3 exhibits good performance for various catalytic applications, such as oxidative coupling of methane (OCM) and dry reforming of methane (DRM), during which coke formation may lead to the deactivation of catalysts. Typically, the reaction between CO2 adsorbed on La2O3 and coke is the rate-determining step of the coke elimination process. This paper describes the influence of Ce addition on ...

Highlighted by Materials Views China (Wiley): “产物可调的Pd-Cu双金属二氧化碳电还原催化剂”

Electrochemical conversion of carbon dioxide (electrochemical reduction of carbon dioxide) to value‐added products is a promising way to solve CO2 emission problems. This paper describes a facile one‐pot approach to synthesize palladium–copper (Pd–Cu) bimetallic catalysts with different structures. Highly efficient performance and tunable product distributions are achieved due to a coordina...

Cover Story: Healing effect of ozone treatment for excessive surface oxygen vacancies

During photoelectrochemical water oxidation reaction process, excessive surface oxygen vacancies always trap the photogenerated holes and the surface recombination will be aggravated. We developed an ozone treatment method that could effectively heal surface oxygen vacancies and suppress the recombination of electron-hole pairs on the surface of two-dimensional WO3 nanoflakes. The ozone treatme...

Chengcheng’s work is highlighted by Advanced Science News

​Chengcheng’s work on “Surviving High-Temperature Calcination: ZrO2-Induced Hematite Nanotubes for Photoelectrochemical Water Oxidation” is highlighted by Advanced Science News (Wiley). Congrats, Chengcheng!http://url.cn/465xzpX

Zhiqi’s Paper is Selected as Cover Article on JACS

Zhiqi’s paper on “Synthesis of Platinum Nanotubes and Nanorings via Simultaneous Metal Alloying and Etching“ is selected as Cover Article by JACS. His paper on “Collapsed Polymer-directed Synthesis of Multicomponent Coaxial-like Nanostructures“ is also accepted by Nature Commun. Congrats

Two Cover Stories by Xiaoxia

​Xiaoxia’s paper on “Stable Aqueous Photoelectrochemical CO2 Reduction by Cu2O Dark Cathode with Improved Selectivity for Carbonaceous Products“ is selected as Cover Article and VIP Paper by Angew Chem. His paper on “CO2 Photo-reduction: Insights into CO2 Activation on Surfaces of Photocatalysts” is also accepted by Energy Environmental Science. Congrats!

Peng’s work is highlighted by Chemistry Views

​Peng’s work on “Synergistic Cocatalytic Effect of Carbon Nanodots and Co3O4 Nanoclusters for Photoelectrochemical Water Oxidation on Hematite” is highlighted by Chemistry Views

Ang’s work on is highlighted by both Materials Views (Wiley) and Chemical & Engineering News (ACS)

​Ang’s work on “Spatial Separation of Oxidation and Reduction Co-catalysts for Efficient Charge Separation: Pt@TiO2@MnOx Hollow Spheres for Photocatalytic Reactions” is highlighted by both Materials Views (Wiley) and Chemical & Engineering News (ACS). Congrats, Ang!http://www.materialsviews.com/novel-photocatalytic-system-with-remarkably-high-activity/http://cen.acs.org/articles/94/i3/Resea...

Professor Gong’s contribution in chemistry is highlighted by Nature

​Professor Gong’s contribution in chemistry is highlighted by Nature. “Jinlong Gong from the school of chemical engineering and technology is the largest contributor in chemistry, with seven articles (WFC = 4.8) — including one in Nature Communications — on nanomaterials.”http://www.nature.com/nature/journal/v516/n7531_supp/full/516S74a.htm